[Causes of progressive optic nerve dystrophy in patients with primary open-angle glaucoma after antiglaucoma surgery performed at the early stages].

Analysis of the results of follow-up of patients operated on at the initial stages of open-angle glaucoma revealed that, if the hemodynamic parameters of the orbital artery are lowered, the process progresses in the presence of normal intraocular pressure. The linear bloodflow velocity (LBV) in the orbital and suprablock artery varies within a wide range in patients with the initial stages of open-angle glaucoma, this indicating the heterogeneity of hemodynamic disorders at the beginning of the disease. Low values of LBV in the supratrochlear or orbital arteries during the first stage of open-angle glaucoma may be regarded as a risk factor for the progress of glaucomatous atrophy of the optic nerves, despite the normalization of ophthalmic tone.